公开(公告)号：US20180131062A1

公开(公告)日：2018-05-10

申请号：US15720277

申请日：2017-09-29

Applicant: LGS INNOVATIONS LLC

Inventor： ALAN Scott BRANNON ,  JEFFREY JAN NUMMERDOR, JR. ,  SCOTT W. BURGESS

IPC: H01P1/20 ,  H01P1/208 ,  H04B1/40 ,  H03H7/46

CPC classification number: H01P1/2002 ,  C30B25/00 ,  H01P1/2056 ,  H01P1/2084 ,  H03H7/463 ,  H04B1/40

Abstract: The present application is directed to a filter and methods of making the same. The filter includes a block of dielectric material with a top surface including a patterned region, a bottom surface, and side surfaces. The filter also includes a through-hole extending through the block from the top surface to the bottom surface. The through-hole is partially surrounded by the patterned region. The filter also includes a wall extending from the top surface, the wall having an inner surface, an outer surface, and a roof. The bottom surface, side surfaces, outer surface, and roof have a first coating of silver and glass frit. The patterned region, through-hole and inner surface have a second coating of silver and glass frit. The glass frit in the first coating is at least 0.5% greater than the glass frit in the second coating. The application is also directed to a system including a printed circuit board and a filter.